Two different.
On the naughty side I've masturbated my gf in a cinema before. It was quiet, daytime and our first date *grin*.

Secondly, I like being deprived. I really enjoy being tied onto the bed, with my arms and legs tightly pulled, with a soft gag in my mouth and a blindfold over my eyes.

She starts to tease me and taunt me, with my dick floating in the air under her control and then when she's ready she'll fuck me slowly literally milking my dick until I cum inside her. Then she'll remove my gag and make me eat her pussy...